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Finding the Fourth Proportional to 675,228.30, 931,777.47 and 369,243.78

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Solution

The fourth proportional to 675,228.30, 931,777.47 and 369,243.78 is: 509,535.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,228.30 : 931,777.47 = 369,243.78 : x
  2. Step 2: Convert to fraction form
    675,228.30/931,777.47 = 369,243.78/x
  3. Step 3: Cross multiply
    675,228.30x = 931,777.47 × 369,243.78
  4. Step 4: Simplify right side
    675,228.30x = 344,053,035,141.64
  5. Step 5: Solve for x
    x = 344,053,035,141.64/675,228.30
  6. Step 6: Final answer
    x = 509,535.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.